/* ── telegrambot.online — общая дизайн-система (лендинг + гайды) ────────── */
@font-face{font-family:'Unbounded';font-style:normal;font-weight:500 800;font-display:swap;src:url('/assets/fonts/unbounded-cyrillic.woff2') format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Unbounded';font-style:normal;font-weight:500 800;font-display:swap;src:url('/assets/fonts/unbounded-latin.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+2000-206F,U+2122,U+2212}
@font-face{font-family:'Inter';font-style:normal;font-weight:400 600;font-display:swap;src:url('/assets/fonts/inter-cyrillic.woff2') format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Inter';font-style:normal;font-weight:400 600;font-display:swap;src:url('/assets/fonts/inter-latin.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+2000-206F,U+2122,U+2212}
@font-face{font-family:'Inter';font-style:normal;font-weight:400 600;font-display:swap;src:url('/assets/fonts/inter-ruble.woff2') format('woff2');unicode-range:U+20BD}

:root{
  --bg:#060911;--panel:rgba(255,255,255,.035);--txt:#eaf0ff;--dim:#9aa7c6;--mute:#5f6b88;--line:rgba(255,255,255,.09);
  --c1:#5b8cff;--c2:#a06bff;--c3:#22d3ee;--c4:#ff56c1;
  --grad:linear-gradient(120deg,var(--c1),var(--c2));
  --ease:cubic-bezier(.22,.61,.36,1);--wrap:1180px;
}
@property --ang{syntax:'<angle>';initial-value:0deg;inherits:false}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--txt);font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;line-height:1.65;overflow-x:hidden;-webkit-font-smoothing:antialiased;letter-spacing:.1px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:'Unbounded','Inter',sans-serif;font-weight:700;line-height:1.08;letter-spacing:-.02em;margin:0;text-wrap:balance}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.narrow{max-width:820px}
.dim{color:var(--dim)}.mute{color:var(--mute)}
section{position:relative;padding:clamp(60px,9vw,120px) 0;z-index:1}
.ico{width:22px;height:22px;stroke:currentColor;stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round;flex:none}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:'Unbounded';font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:#bcd0ff;padding:7px 14px;border:1px solid var(--line);border-radius:999px;background:var(--panel);backdrop-filter:blur(8px)}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--c3);box-shadow:0 0 10px var(--c3);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.35;transform:scale(.7)}}
.gradtext{background:linear-gradient(100deg,#5b8cff,#a06bff 50%,#5b8cff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;background-size:200% 100%;animation:grad 8s linear infinite}
@keyframes grad{to{background-position:200% 0}}
.lead{font-size:clamp(16px,2vw,19px);color:var(--dim);max-width:660px;text-wrap:pretty}

/* FX */
.fx{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.aurora{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;mix-blend-mode:screen}
.a1{width:60vw;height:60vw;left:-15vw;top:-20vw;background:radial-gradient(circle,#1e3a8a,transparent 62%);animation:d1 22s var(--ease) infinite alternate}
.a2{width:55vw;height:55vw;right:-18vw;top:6vw;background:radial-gradient(circle,#6d28d9,transparent 62%);animation:d2 26s var(--ease) infinite alternate}
.a3{width:50vw;height:50vw;left:20vw;bottom:-24vw;background:radial-gradient(circle,#0e7490,transparent 62%);animation:d3 30s var(--ease) infinite alternate}
@keyframes d1{to{transform:translate(12vw,10vw) scale(1.15)}}
@keyframes d2{to{transform:translate(-10vw,8vw) scale(1.1)}}
@keyframes d3{to{transform:translate(8vw,-8vw) scale(1.2)}}
#stars{position:absolute;inset:0;width:100%;height:100%}
.grain{position:fixed;inset:0;z-index:2;pointer-events:none;opacity:.05;mix-blend-mode:overlay;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.vignette{position:fixed;inset:0;z-index:1;pointer-events:none;background:radial-gradient(120% 90% at 50% 0%,transparent 60%,rgba(3,5,12,.75))}
.cursor{position:fixed;top:0;left:0;width:26px;height:26px;border-radius:50%;z-index:60;pointer-events:none;background:radial-gradient(circle,rgba(91,140,255,.9),transparent 65%);mix-blend-mode:screen;transform:translate(-50%,-50%);transition:width .2s,height .2s,opacity .3s;opacity:0}
@media (hover:hover) and (pointer:fine){.cursor{opacity:1}body{cursor:none}a,button,summary,.faq details summary{cursor:none}}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:.35s var(--ease)}
.nav__in{display:flex;align-items:center;justify-content:space-between;height:70px}
.nav.scrolled .nav__in{height:60px}
.nav.scrolled{background:rgba(8,12,22,.72);backdrop-filter:blur(16px) saturate(140%);border-bottom:1px solid var(--line)}
.logo{display:inline-flex;align-items:baseline;gap:0;font-family:'Unbounded';font-weight:700;font-size:18px;letter-spacing:-.02em}
.logo .dim{margin-left:1px}
.logo .mark{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;background:var(--grad);box-shadow:0 6px 18px -6px var(--c1)}
.logo .mark svg{width:19px;height:19px;stroke:#04070f;stroke-width:2;fill:none}
.nav__links{display:none;gap:30px;font-size:14px;color:var(--dim)}
.nav__links a{position:relative;transition:.2s}.nav__links a:hover{color:var(--txt)}
.nav__links a::after{content:'';position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--grad);transition:width .25s var(--ease)}
.nav__links a:hover::after{width:100%}
.nav__right{display:flex;align-items:center;gap:10px}
.nav__burger{display:none;flex-direction:column;gap:5px;width:42px;height:42px;align-items:center;justify-content:center;background:var(--panel);border:1px solid var(--line);border-radius:11px;cursor:pointer;padding:0}
.nav__burger span{width:18px;height:2px;background:var(--txt);border-radius:2px;transition:.3s var(--ease)}
.nav.open .nav__burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.open .nav__burger span:nth-child(2){opacity:0}
.nav.open .nav__burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:759px){
  .nav__burger{display:flex}
  .nav__links{display:flex;position:fixed;top:66px;left:12px;right:12px;flex-direction:column;gap:0;background:rgba(10,15,28,.97);backdrop-filter:blur(18px);border:1px solid var(--line);border-radius:18px;padding:8px 18px;transform:translateY(-14px);opacity:0;pointer-events:none;transition:.28s var(--ease);box-shadow:0 30px 60px -20px rgba(0,0,0,.6)}
  .nav.open .nav__links{transform:none;opacity:1;pointer-events:auto}
  .nav__links a{padding:15px 4px;font-size:16px;border-bottom:1px solid var(--line);color:var(--txt)}
  .nav__links a:last-child{border-bottom:0}
  .nav__links a::after{display:none}
}

/* buttons */
.btn{position:relative;display:inline-flex;align-items:center;gap:10px;font-family:'Unbounded';font-weight:600;font-size:15px;padding:15px 26px;border-radius:14px;border:0;color:#04070f;background:var(--grad);background-size:150% 100%;overflow:hidden;transition:transform .18s var(--ease),box-shadow .3s;box-shadow:0 14px 40px -12px rgba(91,140,255,.7)}
.btn:hover{box-shadow:0 20px 55px -12px rgba(120,90,255,.85);background-position:100% 0}
.btn .ico{stroke:#04070f;stroke-width:2}
.btn--sm{padding:11px 18px;font-size:13px;border-radius:11px}
.btn--ghost{background:var(--panel);color:var(--txt);border:1px solid var(--line);box-shadow:none;backdrop-filter:blur(8px)}
.btn--ghost:hover{border-color:rgba(91,140,255,.6);background:rgba(91,140,255,.08)}
.btn--ghost .ico{stroke:var(--txt)}

/* glass + gradient border */
.glass{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:22px;backdrop-filter:blur(14px);transition:transform .4s var(--ease),border-color .4s,box-shadow .4s}
.glass:hover{border-color:rgba(91,140,255,.35);box-shadow:0 30px 70px -30px rgba(91,140,255,.4)}
.gborder{position:relative}
.gborder::before{content:'';position:absolute;inset:0;border-radius:inherit;padding:1.2px;background:conic-gradient(from var(--ang,0deg),var(--c1),var(--c2),#7c5cff,var(--c1));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;animation:spin 6s linear infinite;pointer-events:none}
@keyframes spin{to{--ang:360deg}}

/* reveal */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .reveal.in{opacity:1;transform:none}

/* eyebrow/headings blocks */
.head{max-width:720px;margin-bottom:44px}
h2.title{font-size:clamp(28px,5vw,52px);margin:16px 0 14px;letter-spacing:-.03em}

/* breadcrumb */
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--mute);padding-top:96px}
.crumb a:hover{color:var(--txt)}
.crumb svg{width:14px;height:14px;stroke:var(--mute);stroke-width:1.6;fill:none}

/* prose (article body) */
.prose{font-size:16.5px;color:#c9d4ee;max-width:760px}
.prose h2{font-size:clamp(24px,3.6vw,34px);margin:52px 0 16px;letter-spacing:-.02em;scroll-margin-top:90px}
.prose h3{font-size:20px;margin:34px 0 12px;color:var(--txt)}
.prose p{margin:0 0 16px}
.prose a{color:#8fb2ff;border-bottom:1px solid rgba(143,178,255,.35);transition:.2s}
.prose a:hover{color:#bcd0ff;border-color:#bcd0ff}
.prose strong,.prose b{color:var(--txt);font-weight:600}
.prose ul,.prose ol{margin:0 0 18px;padding:0 0 0 4px;list-style:none}
.prose ul li{position:relative;padding:6px 0 6px 30px}
.prose ul li::before{content:'';position:absolute;left:2px;top:14px;width:8px;height:8px;border-radius:2px;background:var(--grad)}
.prose ol{counter-reset:o}
.prose ol li{position:relative;padding:6px 0 6px 38px;counter-increment:o}
.prose ol li::before{content:counter(o);position:absolute;left:0;top:6px;width:24px;height:24px;border-radius:7px;background:var(--panel);border:1px solid var(--line);font-family:'Unbounded';font-size:12px;font-weight:600;display:grid;place-items:center;color:#bcd0ff}
.prose code{font-family:'Space Grotesk',ui-monospace,'SF Mono',Menlo,monospace;background:rgba(91,140,255,.12);border:1px solid rgba(91,140,255,.2);border-radius:6px;padding:1px 7px;font-size:.9em;color:#bcd8ff}
.note{margin:22px 0;padding:18px 20px;border-radius:14px;border:1px solid var(--line);background:var(--panel);display:flex;gap:14px;align-items:flex-start;font-size:15px;color:var(--dim)}
.note .ico{stroke:var(--c3);margin-top:1px}
.note b{color:var(--txt)}

/* TOC */
.toc{margin:28px 0 8px;padding:20px 22px;border-radius:16px}
.toc b{font-family:'Unbounded';font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim);display:block;margin-bottom:12px}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:t;display:grid;gap:9px}
.toc ol li{counter-increment:t}
.toc ol li a{display:flex;gap:11px;font-size:15px;color:#c9d4ee;transition:.2s}
.toc ol li a::before{content:counter(t,decimal-leading-zero);font-family:'Unbounded';font-size:12px;color:var(--c1);flex:none}
.toc ol li a:hover{color:#fff}

/* comparison table */
.tablewrap{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:16px}
table.cmp{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
table.cmp th,table.cmp td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
table.cmp thead th{font-family:'Unbounded';font-size:13px;color:var(--txt);background:rgba(255,255,255,.03)}
table.cmp tbody td{color:var(--dim)}
table.cmp tr:last-child td{border-bottom:0}
table.cmp .yes{color:#7ff0d0}.table .no{color:var(--mute)}

/* cards grids reused */
.grid{display:grid;gap:20px}
.cell{padding:26px;position:relative;overflow:hidden}
.cell .ico{width:30px;height:30px;stroke:var(--c1);margin-bottom:16px}
.cell h3{font-size:18px;margin-bottom:6px}
.cell p{margin:0;font-size:14px;color:var(--dim)}
.rowlist{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:12px}
.rowlist li{display:flex;gap:12px;align-items:flex-start;color:var(--dim);font-size:15px}
.rowlist .ico{width:20px;height:20px;margin-top:1px;stroke:var(--c3)}

/* related cards */
.related{display:grid;gap:16px;margin-top:26px}
.rcard{padding:24px;display:flex;flex-direction:column;gap:8px}
.rcard .k{font-family:'Unbounded';font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--c1)}
.rcard h3{font-size:18px}
.rcard p{margin:0;font-size:14px;color:var(--dim)}
.rcard .go{margin-top:auto;padding-top:10px;display:inline-flex;gap:8px;align-items:center;font-size:14px;color:#8fb2ff}

/* faq */
.faq{max-width:840px}
.faq details{border:1px solid var(--line);border-radius:16px;margin-bottom:12px;background:var(--panel);overflow:hidden;transition:border-color .3s,background .3s}
.faq details:hover{border-color:rgba(91,140,255,.32);background:rgba(91,140,255,.05)}
.faq summary:hover .pm::before,.faq summary:hover .pm::after{background:var(--c2)}
:root{interpolate-size:allow-keywords}
.faq details::details-content{block-size:0;overflow:clip;transition:block-size .32s var(--ease)}
.faq details[open]::details-content{block-size:auto}
.faq details[open]{border-color:rgba(91,140,255,.35)}
.faq summary{list-style:none;cursor:pointer;font-family:'Unbounded';font-weight:600;font-size:16px;padding:20px 22px;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary .pm{position:relative;width:20px;height:20px;flex:none}
.faq summary .pm::before,.faq summary .pm::after{content:'';position:absolute;background:var(--c1);border-radius:2px;transition:.3s var(--ease)}
.faq summary .pm::before{top:9px;left:0;width:20px;height:2px}
.faq summary .pm::after{left:9px;top:0;width:2px;height:20px}
.faq details[open] summary .pm::after{transform:rotate(90deg);opacity:0}
.faq details p{padding:0 22px 20px;margin:0;color:var(--dim);font-size:15px;line-height:1.65}

/* cta band */
.cta{text-align:center}
.cta .glass{padding:clamp(38px,6vw,70px) 28px;overflow:hidden}
.cta h2{font-size:clamp(26px,4.5vw,46px)}

/* footer */
footer{border-top:1px solid var(--line);padding:44px 0;position:relative;z-index:1}
.foot{display:flex;flex-wrap:wrap;gap:20px 28px;justify-content:space-between;align-items:flex-start}
.foot__links{display:flex;flex-wrap:wrap;gap:10px 24px;font-size:14px;color:var(--dim)}
.foot__links a{transition:.2s}.foot__links a:hover{color:var(--txt)}
.foot__col{display:grid;gap:8px}
.foot__col b{font-family:'Unbounded';font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--mute);margin-bottom:4px}

@media(min-width:760px){
  .nav__links{display:flex}
  .grid.c2{grid-template-columns:1fr 1fr}
  .grid.c3{grid-template-columns:repeat(3,1fr)}
  .related{grid-template-columns:repeat(3,1fr)}
  .article{display:grid;grid-template-columns:1fr;gap:40px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001s!important;animation-iteration-count:1!important;transition-duration:.001s!important}
  .js .reveal{opacity:1;transform:none}
}

/* ── Footer ─────────────────────────────────────────────────────── */
footer{border-top:1px solid var(--line);margin-top:24px;position:relative;z-index:1}
.foot{display:grid;grid-template-columns:1fr;gap:34px;padding:54px 0 10px}
.foot__brand{max-width:340px}
.foot__brand .logo{margin-bottom:14px}
.foot__brand p{margin:0;font-size:14px;color:var(--mute);line-height:1.6}
.foot__brand a,.foot__bottom a{color:#8fb2ff;transition:.2s}
.foot__brand a:hover,.foot__bottom a:hover{color:#bcd0ff}
.foot__col b{display:block;font-family:'Unbounded';font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--mute);margin-bottom:14px}
.foot__col a{display:block;font-size:14.5px;color:var(--dim);padding:5px 0;transition:.2s}
.foot__col a:hover{color:var(--txt)}
.foot__bottom{display:flex;flex-wrap:wrap;gap:12px 20px;justify-content:space-between;align-items:center;padding:22px 0 44px;margin-top:30px;border-top:1px solid var(--line);font-size:13px;color:var(--mute)}
@media(min-width:760px){.foot{grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:40px}}

/* ── Blog: post meta, figures, quotes, embeds ─────────────────────── */
.post__meta{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;font-size:13.5px;color:var(--mute);margin:12px 0 0}
.post__meta time{color:var(--dim)}
.post__dot{opacity:.5}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 0}
.tag-chip{font-size:12.5px;color:var(--dim);padding:5px 12px;border-radius:999px;border:1px solid var(--line);background:var(--panel)}
.post__cover{border-radius:18px;border:1px solid var(--line);margin:26px 0 4px;overflow:hidden;background:var(--bg2)}
.post__cover img{width:100%;display:block}
.prose figure{margin:28px 0}
.prose figure img{border-radius:14px;border:1px solid var(--line);width:100%;display:block}
.prose figcaption{font-size:13px;color:var(--mute);text-align:center;margin-top:9px}
.prose blockquote{margin:26px 0;padding:16px 22px;border-left:3px solid var(--c1);background:rgba(91,140,255,.06);border-radius:0 12px 12px 0;color:#d3ddf6;font-size:16.5px}
.prose blockquote p{margin:0}
.prose blockquote cite{display:block;margin-top:10px;font-size:13px;color:var(--mute);font-style:normal}
.prose mark{background:rgba(160,107,255,.26);color:#efe9ff;padding:0 5px;border-radius:5px}
.prose hr{border:0;height:1px;background:var(--line);margin:36px 0}
.prose pre{background:#0a0f1e;border:1px solid var(--line);border-radius:12px;padding:16px 18px;overflow-x:auto;margin:22px 0}
.prose pre code{background:none;border:0;padding:0;font-size:13.5px;color:#cbd8f5}
.embed{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:14px;border:1px solid var(--line);background:#000}
.embed iframe{position:absolute;inset:0;width:100%;height:100%}

/* ── Blog index cards ─────────────────────────────────────────────── */
.bloglist{display:grid;grid-template-columns:1fr;gap:20px;margin-top:8px}
.bpost{display:flex;flex-direction:column;overflow:hidden;padding:0;transition:transform .3s var(--ease),border-color .4s,box-shadow .4s}
.bpost:hover{transform:translateY(-5px)}
.bpost__img{aspect-ratio:16/9;background:var(--bg2);overflow:hidden}
.bpost__img img{width:100%;height:100%;object-fit:cover}
.bpost__b{padding:22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.bpost__b h2{font-size:19px;font-family:'Unbounded',sans-serif;line-height:1.2}
.bpost__b p{margin:0;font-size:14.5px;color:var(--dim)}
.bpost__meta{margin-top:auto;padding-top:6px;font-size:12.5px;color:var(--mute)}
@media(min-width:640px){.bloglist{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.bloglist{grid-template-columns:1fr 1fr 1fr}}